#### Title

The correlation between the distance of the object from the plate to the resolution and depth of the hologram produced by a Helium Neon laser

#### School Name

Spring Valley High School

#### Grade Level

11th Grade

#### Presentation Topic

Physics

#### Presentation Type

Mentored

#### Written Paper Award

2nd Place

#### Abstract

The purpose of this experiment was to create higher quality holograms without losing the depth of the image. The hypothesis was that if the distance of the object from the plate was increased then the depth would increase and the resolution would decrease. The setup was created using a Helium Neon laser, magnets, and a shiny red model of New York city. The object was placed 97cm away from the laser and the plate was balanced on the magnets at 95cm. The plate was in complete darkness, and after the plate was placed the table was left alone to stabilize for 5 minutes. After the 5 minutes were up the plate was exposed to the laser beam for 5 seconds. Then the plate was processed using a basic ascorbic acid and bleach process. The data were analyzed using a linear regression t test for the depth of the holograms were (t(2)=5.05, p=0.037, r2=.927, r=0.96) at an alpha value of 0.05. The p value is less than the alpha value of 0.05 so the data for this set is significant. The linear regression t test for the resolution of the holograms were (t(3)= -9.23, p= 0.0027, r2= 0.966, r= -0.983) at an alpha value of 0.05. Again the p value is less than the alpha value of 0.05, so the data for this experiment is also significant.

#### Recommended Citation

Gottipaty, Nikhil, "The correlation between the distance of the object from the plate to the resolution and depth of the hologram produced by a Helium Neon laser" (2017). *South Carolina Junior Academy of Science*. 174.

http://scholarexchange.furman.edu/scjas/2017/all/174

#### Location

Wall 307

#### Start Date

3-25-2017 9:30 AM

#### Presentation Format

Oral and Written

#### Group Project

No

The correlation between the distance of the object from the plate to the resolution and depth of the hologram produced by a Helium Neon laser

Wall 307

The purpose of this experiment was to create higher quality holograms without losing the depth of the image. The hypothesis was that if the distance of the object from the plate was increased then the depth would increase and the resolution would decrease. The setup was created using a Helium Neon laser, magnets, and a shiny red model of New York city. The object was placed 97cm away from the laser and the plate was balanced on the magnets at 95cm. The plate was in complete darkness, and after the plate was placed the table was left alone to stabilize for 5 minutes. After the 5 minutes were up the plate was exposed to the laser beam for 5 seconds. Then the plate was processed using a basic ascorbic acid and bleach process. The data were analyzed using a linear regression t test for the depth of the holograms were (t(2)=5.05, p=0.037, r2=.927, r=0.96) at an alpha value of 0.05. The p value is less than the alpha value of 0.05 so the data for this set is significant. The linear regression t test for the resolution of the holograms were (t(3)= -9.23, p= 0.0027, r2= 0.966, r= -0.983) at an alpha value of 0.05. Again the p value is less than the alpha value of 0.05, so the data for this experiment is also significant.

## Mentor

Mentor: Rao Gottipaty, Professor at Adelphi University